My friend has a 92 GS Integra...He just got APEXI N1 muffler, DC Ceramic 4-2-1 sport headers, and he got custom 3 1/4in. piping done with his stock cat still on...Do you think he has lost and back-pressure at all? and do you think with a Hi-Flow Cat he can get more power?? Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93JDMHONDA &raquo;</TD></TR><TR><TD CLASS="quote">My friend has a 92 GS Integra...He just got APEXI N1 muffler, DC Ceramic 4-2-1 sport headers, and he got custom 3 1/4in. piping done with his stock cat still on...Do you think he has lost and back-pressure at all? and do you think with a Hi-Flow Cat he can get more power?? Thanks</TD></TR></TABLE>
Guess what.... a more free flowing exhaust reduces backpressure. So, yes, he has lost back pressure. The cat is undoubtedly the bottleneck in his system, but I doubt he'll gain a lot (more than 3-4 hp) since cats are generally not as restrictive as people think (unless they are clogged).

BTW, 3 1/4" piping is WAY overkill on a small 4 cylinder.

 

holy cow...... 3 1/4" piping?? i hope you meant 2 1/4"

 

3 1/4" piping is what u would need for a monster turbo setup, not a 1.8 four cylnder.

 

Yeah sorry meant 2 1/4...but still...I think his car has gotten slower since the exhaust...sounds really nice...but def not movin as fast as i would have thought

 

wow i was gonna say 3 1/4, but 2 1/4 is perfect thats the reccomended size for a teg

 

ha i read that and I was like holy ****!